Electrical performance detection table for combination switch on directional tubular column

Abstract

The utility model provides a directional tubular column combination switch electrical performance detection bench, which is characterized in that the front surface of a detection bench body is provided with a plurality of display screens, and two sides of the display screens are respectively provided with a plurality of lighting modules; a plurality of power supply interfaces, a load interface, a master control switch and a power supply interface are arranged on the back surface of the detection table body; a BCM type combination switch detection circuit and a traditional type combination switch detection circuit are arranged in the detection table body. The BCM type combination switch detection circuit and the traditional type combination switch detection circuit are each composed of a lamplight detection circuit and a windscreen wiper detection circuit, and the lamplight detection circuits and the windscreen wiper detection circuits are configured to be used for detecting loads carried by the load interfaces and displaying detection results on the display screen.

Description

Technical Field

[0001] This application relates to the technical field of automotive steering wheel combination switches, and particularly to an electrical performance detection bench for a combination switch on a steering column. Background Art

[0002] Traditional in-vehicle electrical appliances adopt the method of directly controlling loads with switches, so the switches used are mostly mechanical switches; the same is true for the combination switch on the steering column, and its lighting control module (controlling left and right turn signals, clearance lights, headlights, high and low beams, etc.) mostly uses mechanical switches; its wiper control module (controlling the actuation rate and frequency of front and rear wipers, front and rear water spray pumps, etc.) mostly adopts a structure of circuit board + relay;

[0003] With the emergence of the second-generation central control, most in-vehicle switch products no longer need to meet the performance requirements of conducting large currents, and only need to transmit on-off signals to the BCM body control module to achieve the operation control of loads on the vehicle;

[0004] Whether it is the combination switch in the traditional mode or under the second-generation central control, during their use, they must meet the requirements of stability, durability, voltage drop threshold, as well as correct action logic and interface definition. It's just that the traditional combination switch has an additional requirement of carrying large currents compared to the BCM combination switch. Utility Model Content

[0005] To solve the above technical problems, this application proposes an electrical performance detection bench for a combination switch on a steering column, including that the front of the detection bench body is provided with multiple display screens, and multiple lighting modules are respectively arranged on both sides of the display screens; the back of the detection bench body is provided with multiple power supply interfaces, load interfaces, a master control switch and a power supply interface; the inside of the detection bench body is provided with a BCM combination switch detection circuit and a traditional combination switch detection circuit; both the BCM combination switch detection circuit and the traditional combination switch detection circuit are composed of a lighting detection circuit and a wiper detection circuit, and the lighting detection circuit and the wiper detection circuit are configured to detect the loads carried by the load interfaces and present the detection results on the display screens.

[0006] Through the above technical solutions, it can quickly detect whether the action logic and interface definition of the combination switch conform to the supporting vehicle models, and assist in detecting the stability under the on state of the switch and the tolerance of the traditional combination switch to large working currents.

[0007] This application is further set as follows: the display screens include: a BCM switch resistance value display screen, a front wiper module pin 3 voltage display screen, a front wiper LO gear pin 2 voltage display screen, and a front wiper HI gear pin 1 voltage display screen.

[0008] The present application is further configured such that the lighting module includes a vehicle wiper control indicator module and a power button and lighting control indicator module; the vehicle wiper control indicator module is connected to the wiper detection circuit; and the lighting control indicator module is connected to the lighting detection circuit.

[0009] The present application is further configured such that the vehicle wiper control indicator module includes a vehicle wiper control indicator module interface and a plurality of indicator lights; the indicator lights include a HI gear indicator light, a LO gear indicator light, a front water pump indicator light, an ON gear indicator light, an INT gear indicator light, and a rear water pump indicator light; the vehicle wiper control indicator module interface includes pin numbers 1 - 11, pin B1, and pin B2, and the pins are respectively connected to the indicator lights.

[0010] The present application is further configured such that the wiper detection circuit of the BCM type combination switch detection circuit includes a first voltmeter, a second voltmeter, a third voltmeter, a fourth voltmeter, a first ammeter, a second ammeter, a third ammeter, a first diode, a second diode, an intermittent power-off switch, a self - reset switch, a self - locking switch, a first resistor, a second resistor, and a third resistor; pin 1 is connected to the positive electrode of the first diode, the third voltmeter, and the HI gear indicator light; pin 2 is connected to the positive electrode of the second diode, the LO gear indicator light, and the fourth voltmeter; the intermittent power - off switch is respectively connected to the self - locking switch and the self - reset switch to form a self - locking and reset circuit; pin 3 is connected to the second voltmeter and is connected to the other end of the second voltmeter through the self - locking and reset circuit; pin 4 is respectively connected to the fourth voltmeter, the LO gear indicator light, the first ammeter, the HI gear indicator light, the self - locking and reset circuit, the second voltmeter, and the first voltmeter and is grounded; pin 6 is connected to the ON gear indicator light, the INT gear indicator light, the rear water pump indicator light, the third resistor, the front water pump indicator light, the second resistor, and the power supply interface; pin 7 is connected to the first voltmeter; pin 8 is connected to the INT gear indicator light and is simultaneously connected to pins 4, 9, 10, and 11; pin 9 is connected to the rear water pump indicator light and is connected to the third resistor through the third ammeter; pin 10 is connected to the front water pump indicator light and is connected to the second resistor through the second ammeter; pin 11 is connected to the ON gear indicator light.

[0011] The present application is further configured such that the lighting control indicator module of the BCM type combination switch detection circuit includes a lighting control indicator module interface and a plurality of indicator lights; the indicator lights include an overtaking light, a high beam light, a low beam light, a left turn light, a contour light, a right turn light, and a front fog light; the lighting control indicator module interface includes pin numbers 12 - 25, and the pins are respectively connected to the indicator lights.

[0012] This application is further configured such that the lighting detection circuit of the BCM type combination switch detection circuit includes: a fourth ammeter, a fifth ammeter, a sixth ammeter, a seventh ammeter, a relay, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a flasher, and a third diode; the 12th pin is simultaneously connected to the negative electrode of the third diode, the passing lamp, the 13th pin, the 19th pin, the 20th pin, and the 21st pin; the 13th pin is connected to the high beam lamp and the sixth ammeter; the 16th pin is simultaneously connected to the 17th pin, the 18th pin, the right turn lamp, and the fifth resistor; the 17th pin is connected to the flasher; the 18th pin is connected to the fourth resistor and the left turn lamp; the 19th pin is simultaneously connected to the fifth ammeter and the low beam lamp; the 20th pin is simultaneously connected to the 21st pin, the right turn lamp, the fifth resistor, the flasher, the left turn lamp, and the fourth resistor, and is grounded; the 22nd pin is connected to the fourth ammeter and the clearance lamp; the 23rd pin is connected to the positive electrode of the third diode and the coil of the relay; the 24th pin is simultaneously connected to the seventh ammeter, the front fog lamp, and the 25th pin; the 25th pin is grounded; the fourth resistor is connected in parallel across the left turn lamp; the fifth resistor is connected in parallel across the right turn lamp; one end of the sixth resistor is connected to the fourth ammeter, and the other end is simultaneously connected to the clearance lamp, the passing lamp, and the coil of the relay; one end of the seventh resistor is connected to the fifth ammeter, and the other end is simultaneously connected to the low beam lamp, the high beam lamp, and the eighth resistor, and is connected to the flasher through a switch controlled by the relay; the eighth resistor is connected to the sixth ammeter; one end of the ninth resistor is connected to the seventh ammeter, and the other end is connected to the front fog lamp.

[0013] This application is further configured such that the flasher is connected to the power supply interface.

[0014] This application is further configured such that the front fog lamp and one end of the ninth resistor are respectively connected to the power supply interface.

[0015] This application is further configured to further include a mode switching module, and the mode switching module is configured to switch between the BCM type combination switch detection circuit and the traditional type combination switch detection circuit.

[0016] Through this technical solution, multi-functional use of one device is achieved: for combination switches (including both traditional type and BCM type) with exactly the same interface shape but different interface definitions, through the optimization of the internal circuit and the preset manual switching mode switch, multi-functional use of one device is achieved.

[0017] Through the technical solution of this application, the following can be achieved:

[0018] 1. In order to quickly detect whether the action logic and interface definition of the combination switch conform to the supporting vehicle model, assist in detecting the stability under the on state of the switch, and the tolerance of the large operating current of the traditional type combination switch, this combination switch electrical performance detection bench is developed;

[0019] 2. Detection of on-off function (i.e., action logic and interface definition): After inserting the combination switch with the interface type corresponding to and matching that of this test bench into the interface of this test bench, start running this test bench and perform actuation operations on the combination switch (such as toggling the gear lever of the lighting control module or twisting the knob on the gear lever). If the switch function is normal, the device will give a prompt in the form of the indicator light staying on constantly or flashing periodically and regularly.

[0020] 3. Monitoring of conduction stability: There is an additional meter on this device for monitoring current and voltage. For some important modules, the stability of their current and voltage can be monitored. At the same time, if there is serious poor contact inside the switch, the indicator light on the panel will also flash irregularly.

[0021] 4. Detection of tolerance to large operating current: This device is internally equipped with a high-power switching power supply, and there are reserved interfaces on the back panel of the device. By expanding and connecting a load, the current passing through the combination switch can be increased. Description of the Drawings

[0022] The drawings are included to provide a further understanding of the embodiments and are incorporated into and form a part of this specification. The drawings illustrate the embodiments and are used in conjunction with the description to explain the principles of the present application. Other embodiments and many of the expected advantages of the embodiments will be readily recognized as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily drawn to scale with each other. The same reference numerals refer to corresponding similar components.

[0023] Figure 1 is a schematic structural diagram of an electrical performance test bench for a combination switch on a steering column according to an embodiment of the present application;

[0024] Figure 2 is a schematic structural diagram of the interface of the lighting control indicator light module of an electrical performance test bench for a combination switch on a steering column according to an embodiment of the present application;

[0025] Figure 3 is a schematic structural diagram of the interface of the vehicle wiper control indicator light module of an electrical performance test bench for a combination switch on a steering column according to an embodiment of the present application;

[0026] Figure 4 is a circuit diagram of the detection circuit for a traditional type of combination switch of an electrical performance test bench for a combination switch on a steering column according to an embodiment of the present application;

[0027] Figure 5 is a circuit diagram of the detection circuit for a BCM type of combination switch of an electrical performance test bench for a combination switch on a steering column according to an embodiment of the present application.

[0028] The meanings of the numbers in the figures are as follows:

[0029] 1. Power button and lighting control indicator module; 2. Display screen; 3. Vehicle wiper control indicator module; 4. Power switch; 5. Power supply interface; 6. Load interface; 7. Master control switch; 8. Power interface; 9. Left and right turn signal load interfaces; R1. First resistor; R2. Second resistor; R3. Third resistor; R4. Fourth resistor; R5. Fifth resistor; R6. Sixth resistor; R7. Seventh resistor; R8. Eighth resistor; R9. Ninth resistor; D1. First diode; D2. Second diode; D3. Third diode. Detailed implementation manners

[0030] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and illustrate illustrative specific embodiments in which the present application can be practiced. In this regard, directional terms such as "top", "bottom", "left", "right", "upper", "lower", etc. are used with reference to the orientation of the described figures. Since the components of the embodiments can be positioned in several different orientations, the directional terms are used for the purpose of illustration and are in no way limiting. It should be understood that other embodiments can be utilized or logical changes can be made without departing from the scope of the present application. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0031] Figure 1 is a structural schematic diagram of an electrical performance detection bench for a combined switch on a steering column according to an embodiment of the present application, as Figure 1 shown, an electrical performance detection bench for a combined switch on a steering column includes a plurality of display screens 2 provided on the front of the detection bench body, and a plurality of lighting modules are respectively arranged on both sides of the display screens 2; a plurality of power supply interfaces 5, load interfaces 6, master control switches 7 and power interfaces 8 are arranged on the back of the detection bench body; a BCM type combined switch detection circuit and a traditional type combined switch detection circuit are arranged inside the detection bench body; both the BCM type combined switch detection circuit and the traditional type combined switch detection circuit are composed of a lighting detection circuit and a wiper detection circuit, and the lighting detection circuit and the wiper detection circuit are configured to detect the load carried by the load interface 6 and present the detection results on the display screen 2.

[0032] Through the above technical solutions, the action logic of the combined switch and whether the interface definition conforms to the supporting vehicle model can be quickly detected, and the stability of the switch under the on state and the tolerance ability of the traditional type combined switch to the large working current can be assisted in detection.

[0033] More specifically, the load interface 6 can expand the corresponding load to measure the large current tolerance performance of the switch; the expandable loads include the following functions: position lights, low beam lights, high beam lights, front fog lights, wiper motor, front water pump, rear water pump.

[0034] The power supply interface 5 has reserved 4 auxiliary power supply interfaces, which can be connected when the instruments on the extended load need additional power supply. Among them, the supply voltage is 12V DC.

[0035] The main control switch 7 controls the switch of the 220V mains power supply connected to the switching power supply.

[0036] This application is further configured such that the display screen 2 includes: a BCM type switch resistance value display screen, a front wiper module 3-pin voltage display screen, a front wiper LO gear 2-pin voltage display screen, and a front wiper HI gear 1-pin voltage display screen.

[0037] The BCM type switch resistance value display screen is set in the middle of the front panel of the test bench body and is used when testing the function of the intermittent time control knob of the front wiper INT gear of the BCM type (automobile second-generation central control) combination switch; it shows the resistance values corresponding to each gear of the intermittent time knob, and the unit is KΩ;

[0038] The front wiper module 3-pin voltage display screen is set in the middle of the front panel of the test bench body. This display shows the voltage value of the 3-pin of the switch wiper module interface; for traditional and BCM type combination switch products, the 3-pin has different functions; 1. Traditional type: The 3-pin can control the output of the 2-pin in the INT gear state; BCM type: The 3-pin is the output interface in the INT gear state.

[0039] The front wiper LO gear 2-pin voltage display screen is set in the middle of the front panel of the test bench body. The 2-pin on the combination switch is the output interface of the low speed gear, and it is generally directly connected or used to control the low speed gear of the front wiper motor.

[0040] The front wiper HI gear 1-pin voltage display screen is set in the middle of the front panel of the test bench body. The 1-pin on the combination switch is the output interface of the high speed gear, and it is generally directly connected or used to control the high speed gear of the front wiper motor.

[0041] This application is further configured such that the lighting module includes: a vehicle wiper control indicator light module 3 and a power button and lighting control indicator light module 1; the vehicle wiper control indicator light module 3 is connected to the wiper detection circuit; the lighting control indicator light module is connected to the lighting detection circuit.

[0042] The lighting control indicator light module 1 is set on the left side of the front panel of the test bench body. Lighting control indicator light module 1: When detecting the lighting control module of the combination switch product, when the switch is toggled or rotated to the corresponding function gear, the indicator lights corresponding to the functions will light up; for example, when the turn signal control lever of the combination switch is toggled to the left turn, the left turn indicator light will blink like a real vehicle, showing a breathing effect.

[0043] The vehicle wiper control indicator module 3 is set on the right side of the front panel of the test bench body. For the vehicle wiper control indicator module 3: when testing the functions of the wiper and spray system control module of the combined switch product, when the switch is toggled or rotated to the corresponding function gear, the indicator lights corresponding to the functions will light up. For example, when the front wiper control lever of the combined switch is turned to the LO gear, the LO gear indicator light will light up, and when it is turned to the INT gear, the LO gear indicator light will flash with a breathing effect.

[0044] Figure 3 It is a schematic structural diagram of the vehicle wiper control indicator module interface of an electric performance test bench for a combined switch on a steering column according to an embodiment of the present application, as Figure 3 shown, the vehicle wiper control indicator module 3 includes: a vehicle wiper control indicator module 3 interface and multiple indicator lights; the indicator lights include: HI gear indicator light, LO gear indicator light, front water pump indicator light, ON gear indicator light, INT gear indicator light and rear water pump indicator light; the vehicle wiper control indicator module 3 interface includes: pin 1 - 11, pin B1 and pin B2, and the pins are respectively connected to the indicator lights.

[0045] Figure 5 It is a circuit diagram of the BCM model combined switch detection circuit of an electric performance test bench for a combined switch on a steering column according to an embodiment of the present application, as Figure 5 shown, the wiper detection circuit of the BCM model combined switch detection circuit includes: a first voltmeter, a second voltmeter, a third voltmeter, a fourth voltmeter, a first ammeter, a second ammeter, a third ammeter, a first diode D1, a second diode D2, an intermittent power-off switch, a self - reset switch, a self - locking switch, a first resistor R1, a second resistor R2 and a third resistor R3; pin 1 is connected to the positive pole of the first diode D1, the third voltmeter and the HI gear indicator light; pin 2 is connected to the positive pole of the second diode D2, the LO gear indicator light and the fourth voltmeter; the intermittent power-off switch is respectively connected to the self - locking switch and the self - reset switch to form a self - locking and reset circuit; pin 3 is connected to the second voltmeter and is connected to the other end of the second voltmeter through the self - locking and reset circuit; pin 4 is respectively connected to the fourth voltmeter, the LO gear indicator light, the first ammeter, the HI gear indicator light, the self - locking and reset circuit, the second voltmeter and the first voltmeter and is grounded; pin 6 is connected to the ON gear indicator light, the INT gear indicator light, the rear water pump indicator light, the third resistor R3, the front water pump indicator light, the second resistor R2 and the power supply interface 5; pin 7 is connected to the first voltmeter; pin 8 is connected to the INT gear indicator light and is simultaneously connected to pins 4, 9, 10 and 11; pin 9 is connected to the rear water pump indicator light and is connected to the third resistor R3 through the third ammeter; pin 10 is connected to the front water pump indicator light and is connected to the second resistor R2 through the second ammeter; pin 11 is connected to the ON gear indicator light.

[0046] Figure 2It is a schematic structural diagram of the interface of the lighting control indicator module of a combined switch electrical performance detection bench on a steering column according to an embodiment of the present application. As Figure 2 shown, the lighting control indicator module of the BCM type combined switch detection circuit includes: a lighting control indicator module interface and multiple indicators; the indicators include: passing lamp, high beam lamp, low beam lamp, left turn lamp, contour lamp, right turn lamp, and front fog lamp; the lighting control indicator module interface includes: pin numbers 12 - 25, and the pins are respectively connected to the indicators.

[0047] Figure 5 It is a circuit diagram of the BCM type combined switch detection circuit of a combined switch electrical performance detection bench on a steering column according to an embodiment of the present application. As Figure 5 shown, the lighting detection circuit of the BCM type combined switch detection circuit includes: a fourth ammeter, a fifth ammeter, a sixth ammeter, a seventh ammeter, a relay, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a flasher, and a third diode D3; pin 12 is simultaneously connected to the negative electrode of the third diode D3, the passing lamp, pin 13, pin 19, pin 20, and pin 21; pin 13 is connected to the high beam lamp and the sixth ammeter; pin 16 is simultaneously connected to pin 17, pin 18, the right turn lamp, and the fifth resistor R5; pin 17 is connected to the flasher; pin 18 is connected to the fourth resistor R4 and the left turn lamp; pin 19 is simultaneously connected to the fifth ammeter and the low beam lamp; pin 20 is simultaneously connected to pin 21, the right turn lamp, the fifth resistor R5, the flasher, the left turn lamp, and the fourth resistor R4, and is grounded; pin 22 is connected to the fourth ammeter and the contour lamp; pin 23 is connected to the positive electrode of the third diode D3 and the coil of the relay; pin 24 is simultaneously connected to the seventh ammeter, the front fog lamp, and pin 25; pin 25 is grounded; the fourth resistor R4 is connected in parallel across the left turn lamp; the fifth resistor R5 is connected in parallel across the right turn lamp; one end of the sixth resistor R6 is connected to the fourth ammeter, and the other end is simultaneously connected to the contour lamp, the passing lamp, and the coil of the relay; one end of the seventh resistor R7 is connected to the fifth ammeter, and the other end is simultaneously connected to the low beam lamp, the high beam lamp, and the eighth resistor R8, and is connected to the flasher through a switch controlled by the relay; the eighth resistor R8 is connected to the sixth ammeter; one end of the ninth resistor R9 is connected to the seventh ammeter, and the other end is connected to the front fog lamp.

[0048] The present application is further configured such that the flasher is connected to the power supply interface 5.

[0049] The present application is further configured such that the front fog lamp and one end of the ninth resistor R9 are respectively connected to the power supply interface 5.

[0050] The present application is further configured to further include a mode switching module, and the mode switching module is configured to switch between the BCM type combined switch detection circuit and the traditional type combined switch detection circuit.

[0051] Through this technical solution, multi-functional use of one device is achieved: for combination switches (including both traditional models and BCM models) with exactly the same interface appearance but different interface definitions, through the optimization of the internal circuit and the preset manual switching mode switch, multi-functional use of one device is achieved.

[0052] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if these modifications and changes are within the scope of the claims of the present application and their equivalent forms, the present application also aims to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. A combined switch electrical performance detection bench for a direction pipe column, characterized in that, A plurality of display screens are provided on the front of the test bench body, and a plurality of lighting modules are respectively arranged on both sides of the display screens; a plurality of power supply interfaces, load interfaces, main control switches and power interfaces are arranged on the back of the test bench body; a BCM type combination switch detection circuit and a traditional type combination switch detection circuit are arranged inside the test bench body; both the BCM type combination switch detection circuit and the traditional type combination switch detection circuit are composed of a lighting detection circuit and a wiper detection circuit, and the lighting detection circuit and the wiper detection circuit are configured to detect the load carried by the load interface and present the detection result on the display screen.

2. The electrical performance detection bench for the combined switch on the direction pipe column according to claim 1, characterized in that, The display screens include: a BCM type switch resistance value display screen, a front wiper module 3rd pin voltage display screen, a front wiper LO gear 2nd pin voltage display screen, and a front wiper HI gear 1st pin voltage display screen.

3. The electrical performance detection bench for the combined switch on the direction pipe column according to claim 1, characterized in that, The lighting modules include: a vehicle wiper control indicator light module, a power button and lighting control indicator light module; the vehicle wiper control indicator light module is connected to the wiper detection circuit; the lighting control indicator light module is connected to the lighting detection circuit.

4. The combined switch electrical performance detection bench for a direction pipe column according to claim 3, characterized in that, The vehicle wiper control indicator light module includes: a vehicle wiper control indicator light module interface and a plurality of indicator lights; the indicator lights include: HI gear indicator light, LO gear indicator light, front water pump indicator light, ON gear indicator light, INT gear indicator light and rear water pump indicator light; the vehicle wiper control indicator light module interface includes: 1-11th pins, B1 pin and B2 pin, and the pins are respectively connected to the indicator lights.

5. An electrical performance detection bench for a combined switch on a directional pipe string according to claim 4, characterized in that, The wiper detection circuit of the BCM type combination switch detection circuit includes: a first voltmeter, a second voltmeter, a third voltmeter, a fourth voltmeter, a first ammeter, a second ammeter, a third ammeter, a first diode, a second diode, an intermittent power-off switch, a self-restoring switch, a self-locking switch, a first resistor, a second resistor, and a third resistor; the No. 1 pin is connected to the positive electrode of the first diode, the third voltmeter, and the HI gear indicator light; the No. 2 pin is connected to the positive electrode of the second diode, the LO gear indicator light, and the fourth voltmeter; the intermittent power-off switch is respectively connected to the self-locking switch and the self-restoring switch to form a self-locking and reset circuit; the No. 3 pin is connected to the second voltmeter and is connected to the other end of the second voltmeter through the self-locking and reset circuit; the No. 4 pin is respectively connected to the fourth voltmeter, the LO gear indicator light, the first ammeter, the HI gear indicator light, the self-locking and reset circuit, the second voltmeter, and the first voltmeter and is grounded; the No. 6 pin is connected to the ON gear indicator light, the INT gear indicator light, the rear water pump indicator light, the third resistor, the front water pump indicator light, the second resistor, and the power supply interface; the No. 7 pin is connected to the first voltmeter; the No. 8 pin is connected to the INT gear indicator light and is simultaneously connected to the No. 4, 9, 10, and 11 pins; the No. 9 pin is connected to the rear water pump indicator light and is connected to the third resistor through the third ammeter; the No. 10 pin is connected to the front water pump indicator light and is connected to the second resistor through the second ammeter; the No. 11 pin is connected to the ON gear indicator light.

6. The electrical performance detection bench for the combined switch on the direction pipe column according to claim 1, characterized in that, The lighting control indicator module of the BCM type combination switch detection circuit includes: a lighting control indicator module interface and multiple indicator lights; the indicator lights include: an overtaking lamp, a high beam lamp, a low beam lamp, a left turn lamp, a contour lamp, a right turn lamp, and a front fog lamp; the lighting control indicator module interface includes: pins 12-25, and the pins are respectively connected to the indicator lights.

7. An electrical performance detection bench for a combined switch on a directional pipe string according to claim 6, characterized in that, The lighting detection circuit of the BCM type combination switch detection circuit includes: a fourth ammeter, a fifth ammeter, a sixth ammeter, a seventh ammeter, a relay, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a flasher, and a third diode; the 12th pin is simultaneously connected to the negative electrode of the third diode, the passing lamp, the 13th pin, the 19th pin, the 20th pin, and the 21st pin; the 13th pin is connected to the high beam lamp and the sixth ammeter; the 16th pin is simultaneously connected to the 17th pin, the 18th pin, the right turn lamp, and the fifth resistor; the 17th pin is connected to the flasher; the 18th pin is connected to the fourth resistor and the left turn lamp; the 19th pin is simultaneously connected to the fifth ammeter and the low beam lamp; the 20th pin is simultaneously connected to the 21st pin, the right turn lamp, the fifth resistor, the flasher, the left turn lamp, and the fourth resistor, and is grounded; the 22nd pin is connected to the fourth ammeter and the clearance lamp; the 23rd pin is connected to the positive electrode of the third diode and the coil of the relay; the 24th pin is simultaneously connected to the seventh ammeter, the front fog lamp, and the 25th pin; the 25th pin is grounded; the fourth resistor is connected in parallel across the left turn lamp; the fifth resistor is connected in parallel across the right turn lamp; one end of the sixth resistor is connected to the fourth ammeter, and the other end is simultaneously connected to the clearance lamp, the passing lamp, and the coil of the relay; one end of the seventh resistor is connected to the fifth ammeter, and the other end is simultaneously connected to the low beam lamp, the high beam lamp, and the eighth resistor, and is connected to the flasher through a switch controlled by the relay; the eighth resistor is connected to the sixth ammeter; one end of the ninth resistor is connected to the seventh ammeter, and the other end is connected to the front fog lamp.

8. The electrical performance detection bench for the combined switch on the directional pipe string according to claim 7, characterized in that, The flasher is connected to the power supply interface.

9. The electrical performance detection bench for the combined switch on the directional pipe string according to claim 7, characterized in that, One end of the front fog lamp and the ninth resistor are respectively connected to the power supply interface.

10. The combined switch electrical performance detection bench for a direction pipe column according to claim 3, characterized in that, It further includes a mode switching module, and the mode switching module is configured to switch between the BCM type combination switch detection circuit and the traditional type combination switch detection circuit.

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